Evolution of the Nano mask with the same IDF-INTEGRATED DUAL FRAME TECHNOLOGY system known in the latest generation Cressi masks to offer a field of vision beyond the norm. The structure of the mask is characterized by a particular design that integrates the face and frame in an extremely compact and hydrodynamic profile very close to the diver's face allowing a particular and wider shape of the lenses. Caliber is therefore the Cressi mask with less internal volume together with an exceptional field of vision thanks to the inclination of the lenses. The buckles are always connected directly to the rigid headband of the mask through a robust but flexible rubber joint. This allows you to adjust the strap and position the mouthpiece without altering the delicate position of the facial. A patented membrane surrounding the inner part of the nose housing acts as a barrier by trapping any moisture that escapes from the diver's nose involuntarily when breathing through the mouth. The result is that, not only is humidity channeled away from the lenses, avoiding fogging, but the need to compensate for pressure is also reduced. The finish is completely matte satin in order to aesthetically match all its components in order to favor a perfect integration in the underwater environment avoiding alarming reflections for marine organisms. Caliber is a perfect choice for freediving as it is designed to offer the best response to the feeling of freedom of the face.